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    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div class="ctn">
      <div class="boxl">
        <div class="boxlT">
          校园风光
          <div class="boxlT1">xiaoyuanfenguang</div>
        </div>
        <div class="boxlB"></div>
      </div>
      <div class="boxlR">
        <div class="shang1"></div>
        <div class="shang2">
          学术研究
          <div class="shangT2">xueshuyanjiu</div>
        </div>
        <div class="shang3"></div>
        <div class="xia1">
          学生活动
          <div class="xiaT1">xueshenghuodong</div>
        </div>
        <div class="xia2"></div>
        <div class="xia3"></div>
      </div>
    </div>
    <style>
      .ctn {
        width: 1200px;
        height: 400px;
        background-color: rgb(144, 127, 255);
        margin: auto;
      }
      .boxl {
        width: 300px;
        height: 400px;
        background-color: aqua;
        float: left;
      }
      .boxlR {
        width: 900px;
        height: 400px;
        background-color: rgb(255, 240, 248);
        float: left;
      }
      .boxlT {
        width: 300px;
        height: 180px;
        background-color: black;
        color: aliceblue;
        font-weight: 800;
        font-size: 40px;
        padding-top: 30px;
        padding-left: 40px;
        box-sizing: border-box;
      }
      .boxlT1 {
        font-size: 20px;
      }
      .boxlB {
        width: 300px;
        height: 220px;
        background-color: blanchedalmond;
        background-image: url("https://www.pdsu.edu.cn/images/fgt12.jpg");
      }
      .shang1 {
        width: 500px;
        height: 200px;
        background-color: purple;
        background-image: url("https://www.pdsu.edu.cn/images/fgt11.jpg");
        float: left;
      }
      .shang2 {
        width: 150px;
        height: 200px;
        background-color: orange;55
        color: aliceblue;
        font-weight: 800;
        font-size: 20px;
        padding-top: 20px;
        padding-left: 100px;
        box-sizing: border-box;
        writing-mode: vertical-rl;
        float: left;
      }
      .shangT2 {
        font-size: 10px;
        writing-mode: vertical-rl;
      }
      .shang3 {
        width: 250px;
        height: 200px;
        background-color: pink;
        background-image: url("https://www.pdsu.edu.cn/images/1.JPG");
        float: left;
      }
      .xia1 {
        width: 300px;
        height: 200px;
        background-color: brown;
        color: aliceblue;
        font-weight: 800;
        font-size: 20px;
        padding-top: 30px;
        padding-left: 40px;
        box-sizing: border-box;
        float: left;
      }
      .xiaT1 {
        font-size: 20px;
      }

      .xia2 {
        width: 300px;
        height: 200px;
        background-color: gray;
        background-image: url("https://www.pdsu.edu.cn/images/fgt14.jpg");
        float: left;
      }
      .xia3 {
        width: 300px;
        height: 200px;
        background-color: navy;
        background-image: url("https://www.pdsu.edu.cn/images/fgt13.jpg");
        float: left;
      }
    </style>
  </body>
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